Determine If the Relation Illustrated Is a Function $$\begin{array} { l } 3 \rightarrow 15 \\4 \rightarrow 20 \\5 \rightarrow 25 \\6 \rightarrow 30\end{array}$$

Multiple Choice

Determine if the relation illustrated is a function. Give the domain and range of the function or relation.
-five times a number $$\begin{array} { l } 3 \rightarrow 15 \\4 \rightarrow 20 \\5 \rightarrow 25 \\6 \rightarrow 30\end{array}$$

A) function domain:{15, 20, 25, 30} range: {3, 4, 5, 6}
B) not a function domain:{15, 20, 25, 30} range: {3, 4, 5, 6}
C) function domain: {3, 4, 5, 6} range: {15, 20, 25, 30}
D) not a function domain: {3, 4, 5, 6} range: {15, 20, 25, 30}